Crystal display technology It's the human-computer interface. Despite constant new improvements, LCD still uses the newest Mini led technology. What's the difference with ancient technologies?

Liquid crystal, LC, physically. Because of its particular physical, chemical and photoelectrical qualities, it is often utilized in display technology and substantially improves gadgets. Common display technology. All LCD variations are under liquid crystal display category. The current LCD sector, however, has already referred to active TFT-LCD technology matrix, eliminating older technologies such as passive STN LCD matrix.

TFT-LCD is called a thin film transistor liquid crystal display, indicating that each liquid crystal pixel on the LCD is individually powered and controlled by the integrated thin film transistor, which not only enhances the reaction time but also accurately controls the color level. It's the cornerstone of consumer stuff, developed technology, and low cost.

Liquid crystals

LCD-building

(BY-SA,Wasami007/CC)

The operational notion of TFT-primary LCD is that two glasses substrates a crystal sandwich layer. The top substratum is a color filter, the bottom glass has a transistor. As the transistor-generated electrical field changes, molecules of fluid crystal deflect and alter light. The voltage is then used to determine pixel brightness, and each pixel contains primary colors red, green, and blue to create image output. While its circuit design is relatively similar to DRAM, instead of complicated epitaxial transistors, it generates amorphous silicon layer or polycrystalline silicon layer.

Using this method, we created independent quality objects. Three: VA, IPS. Difference is crystal. Twisted nematic liquid crystal is the lowest-cost type of LCD panel, yet relatively fast enough for most activities. For example, Samsung produced full-color b-tn with improved responsiveness.

However, TN liquid crystal viewing angle is a severe concern and VA liquid crystal panel is another choice. Without extra corrective film, it can reach 170° from many views. This is due to changing TN liquid crystal to vertical liquid crystal alignment, resulting in higher contrast. But the reaction is slower than liquid crystal, and the cost is higher.

TFT-new LCD-IPS. With a wonderful viewing angle and lower power consumption compared to the VA panel, aircraft switching technology can effectively overcome unfavorable viewing angle and many common TN panel difficulties. Ideal touchscreen. Early iPhones and iPads used liquid crystals, were understandably pricey.

As TFT-LCD processes grew, we usually mentioned these three varieties while discussing the panel before new LED technologies arrived. Of course, there are other breakthrough products such as Samsung's pls, PVA panel and Fujitsu's MVA panel, but it's usually the result of keeping performance from a broad perspective and striving to keep down costs. The standard TN panel faded.

Non-cell failure

Although today in the Red Sea, earlier Taiwan's panel production was popular. Includes glass substratum, backlight module, polarizer, optical film, etc. Most Taiwanese enterprises are active across the supply chain, however well-known firms like Youda and Qun Chuang are mostly engaged in open cell and module production.

TFT-open is broken into three stages: front, middle and back. TFT glass manufacturing front. Its approach resembles the semiconductor process where thin film transistors are implanted by coating and etching in substratum glass. Coupled to the filter, TFT glass adds a polarizing plate. Driver IC and printed circuit board are pressed in the last phase to complete the so-called open cell, though it's semi-finished.

Many end-users purchase open cell directly to mix panel packaging and product packaging to make design more flexible while adding backlight to use. Chinese TV factories have a common BMS mode with over 50% worldwide capacity. Panel manufactures like Youda and group formation started transitioning to open cell shipment some years ago. While the direct distribution of open cell is more profitable than the module, distinct panel manufacturer charges are avoided. But a two-sided edge.

While the panel factory focuses mostly on the manufacture of semi-finished products, a product portfolio cannot be built according to the needs of different functions, resulting in over-supply and ultimately loss of market communication. Thus, numerous research also suggested that panel manufacturing prices are reducing rapidly due to the transfer of open cell distribution method. Long-term, it's not good for large-scale panel industry, and one of the reasons why Chinese firms just break through old-fashioned large-scale producers with price subsidies.